#include "../Eigen/Core"

using namespace Eigen;

void
call_ref(Ref<VectorXf> a)
{
}

int
main()
{
	MatrixXf A(10, 10);
#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
	call_ref(A.row(3));
#else
	call_ref(A.col(3));
#endif
}
